this derivation will be built:
  /nix/store/8pr6hf5jzqp2pxjxvwr1qib5l5mv7bpr-harmonia-llvm-cov-3.2.0.drv
error: Cannot build '/nix/store/8pr6hf5jzqp2pxjxvwr1qib5l5mv7bpr-harmonia-llvm-cov-3.2.0.drv'.
       Reason: builder failed with exit code 100.
       Output paths:
         /nix/store/mr3hhirs75dib7w44rrr5lphlfixrl24-harmonia-llvm-cov-3.2.0
       Last 25 log lines:
       >         FAIL [   2.010s] (2332/2375) harmonia-store-gc::integration gc_empty_store_is_noop
       >         FAIL [   2.083s] (2333/2375) harmonia-store-gc::integration gc_keeps_ca_outputs_of_alive_drv
       >         FAIL [   2.143s] (2334/2375) harmonia-store-gc::integration gc_max_freed_batches_by_estimated_size
       >         FAIL [   2.139s] (2335/2375) harmonia-store-gc::socket_concurrency concurrent_clients_never_resurrect_deleted_paths
       >         FAIL [   2.148s] (2336/2375) harmonia-store-gc::integration gc_keeps_unknown_path_registered_after_snapshot
       >         FAIL [   2.200s] (2337/2375) harmonia-store-gc::integration gc_store_dir_trailing_slash_is_normalized
       >         FAIL [   2.345s] (2340/2375) harmonia-store-gc::integration gc_keeps_runtime_roots_from_open_fd
       >         FAIL [   2.475s] (2341/2375) harmonia-store-gc::integration gc_removes_unknown_disk_entries
       >         FAIL [   2.489s] (2342/2375) harmonia-store-gc::integration gc_socket_root_mid_gc_keeps_path_and_deletes_rest
       >         FAIL [   2.502s] (2343/2375) harmonia-store-gc::integration gc_removes_reserved_space_file_and_creates_private_lock
       >         FAIL [   2.518s] (2344/2375) harmonia-store-gc::integration gc_removes_dangling_auto_root
       >         FAIL [   2.527s] (2345/2375) harmonia-store-gc::integration gc_handles_self_references
       >         FAIL [   2.613s] (2346/2375) harmonia-store-gc::integration gc_ignores_invalid_store_basenames
       >         FAIL [   2.636s] (2348/2375) harmonia-store-gc::integration gc_keeps_runtime_roots_from_environ
       >         FAIL [   2.650s] (2349/2375) harmonia-store-gc::integration gc_deletes_non_utf8_store_entry
       >         FAIL [   2.767s] (2351/2375) harmonia-store-gc::integration gc_removes_unlocked_tmp_dir
       >         FAIL [   2.776s] (2352/2375) harmonia-store-gc::integration gc_keeps_temp_root_not_yet_in_db
       >         FAIL [   2.779s] (2353/2375) harmonia-store-gc::integration gc_keeps_transitive_closure
       >         FAIL [   2.780s] (2354/2375) harmonia-store-gc::integration gc_keeps_lock_file_of_active_build
       >         FAIL [   2.785s] (2355/2375) harmonia-store-gc::integration gc_deletes_readonly_paths
       >         FAIL [   2.799s] (2356/2375) harmonia-store-gc::integration gc_drops_partial_temp_root
       >         FAIL [   2.805s] (2357/2375) harmonia-store-gc::integration gc_keeps_indirect_auto_root
       >         FAIL [   2.872s] (2358/2375) harmonia-store-gc::integration gc_rebases_canonical_runtime_roots_to_logical_store
       >         FAIL [   3.595s] (2362/2375) harmonia-store-gc::integration gc_scans_roots_despite_unfollowable_indirect_target
       > error: test run failed
       For full logs, run:
         nix log /nix/store/8pr6hf5jzqp2pxjxvwr1qib5l5mv7bpr-harmonia-llvm-cov-3.2.0.drv